![](https://nthumb.tpgimages.com/mid2_com_img/28230/23781/TOP21757323.jpg)
Washing ore to extract gold. Water fed into sieve (2) containing ore. Muddy solution fed along wooden collecting troughs, often lined with dark woollen cloth: gold separated out on the way. From 1683 English edition of Lazarus Ercker 'Beschreibung allerfurnemisten mineralischen Ertzt' of 1580. Copperplate engraving Photo via Newscom
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